<!--
 * @Author: your name
 * @Date: 2021-03-31 14:36:40
 * @LastEditTime: 2021-04-07 22:31:56
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \element实战\element_ui\src\components\home.vue
-->
<template>
  <el-container class="home-container">
    <!--头部区域-->
    <el-header style="padding-left: 0px">
      <div class="div">
        <img src="../assets/12006035_165629808038_2.jpg" alt="" />
        <span>傻逼后台管理系统</span>
      </div>
      <el-button type="info" @click="logOut">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!--动态绑定使用三木运算符判断，如果解决折叠展开后的侧边栏的宽度 -->
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#373d41"
          text-color="#fff"
          active-text-color="#409EFF"
          :collapse="isCollapse"
          :collapse-transition="false"
          unique-opened
          router
          :default-active="activePath"
        >
          <!-- :collapse-transition取消折叠动画 -->
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
            >
              <!-- 一级菜单的模板区域 -->
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template></el-menu-item
            >
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      //左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'icon el-icon-user-solid',
        103: 'icon el-icon-menu',
        101: 'icon el-icon-shopping-bag-1',
        102: 'icon el-icon-s-order',
        145: 'icon el-icon-data-line',
      },
      //是否折叠
      isCollapse: false,
      //被激活的链接地址
      activePath: '',
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logOut() {
      //清空token
      window.sessionStorage.clear()
      //跳转到登录页
      this.$router.push('/login') //重定向到登录页
    },
    //获取请求菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200)
        return this.$message.error('获取请求菜单失败')
      this.menulist = res.data
    },
    //点击按钮，切换菜单的折叠和展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    //保存连接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
    },
  },
}
</script>
<style lang="less">
* {
  margin: 0;
  padding: 0;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-mian {
  background-color: #eaedf1;
}
.home-container {
  height: 100%;
}
.el-header img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
}
.icon {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>